{"data":{"id":"8ec0d49d-0251-4dc9-9620-7a99bf331cf6","title":"CVE-2026-42261: PromptHub is an all-in-one AI toolbox for prompt, skill, and agent management. From version 0.4.9 to before version…","summary":"PromptHub, from version 0.4.9 before 0.5.4, has an SSRF flaw in the authenticated POST /api/skills/fetch-remote endpoint in apps/web/src/routes/skills.ts. The private-address check in isPrivateIPv6 in apps/web/src/utils/remote-http.ts can be bypassed with alternate IPv6 representations, letting any authenticated user reach IPv4 loopback, RFC1918 and link-local addresses and read up to 5 MB of the response. On deployments with ALLOW_REGISTRATION=true, any internet user who can register can exploit it.","solution":"Fixed in 0.5.4.","labels":["security","industry"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-42261","publishedAt":"2026-05-08T04:16:20.107Z","cveId":"CVE-2026-42261","cweIds":["CWE-20","CWE-693","CWE-918"],"cvssScore":"7.1","cvssSeverity":"high","severity":"high","attackType":["other"],"issueType":"vulnerability","affectedPackages":null,"affectedPackageNames":null,"affectedPackageRefs":null,"affectedVendors":[],"affectedVendorsRaw":["PromptHub"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":"PromptHub SSRF via IPv6 private address bypass in skills fetch","headlinePromptVersion":"h1","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","attackVector":"network","attackComplexity":"low","privilegesRequired":"low","userInteraction":"none","exploitMaturity":"unknown","epssScore":0.00237,"epssCheckedAt":"2026-11-10T18:05:33.319Z","kevDateAdded":null,"advisoryAliases":null,"affectedPackagesSource":null,"affectedPackagesCheckedAt":"2026-11-10T12:16:15.072Z","patchAvailable":null,"disclosureDate":"2026-05-08T04:16:20.107Z","fixReleasedAt":null,"daysToFix":null,"fixCheckedAt":null,"capecIds":["CAPEC-664"],"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality"],"aiComponentTargeted":"api","llmSpecific":false,"classifierConfidence":0.8,"researchCategory":null,"atlasIds":null,"fixes":[]}}